'\" te
.\" Copyright (c) 2005, Sun Microsystems, Inc. All Rights Reserved.
.\" The contents of this file are subject to the terms of the Common Development and Distribution License (the "License").  You may not use this file except in compliance with the License.
.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing.  See the License for the specific language governing permissions and limitations under the License.
.\" When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE.  If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
.TH POOL_ASSOCIATE 3POOL "January 15, 2020"
.SH NAME
pool_associate, pool_create, pool_destroy, pool_dissociate, pool_info,
pool_query_pool_resources \- resource pool manipulation functions
.SH SYNOPSIS
.nf
cc [ \fIflag\fR\&.\|.\|. ] \fIfile\fR\&.\|.\|. \fB-lpool\fR [ \fIlibrary\fR\&.\|.\|. ]
#include <pool.h>

\fBint\fR \fBpool_associate\fR(\fBpool_conf_t *\fR\fIconf\fR, \fB pool_t *\fR\fIpool\fR,
     \fBpool_resource_t *\fR\fIresource\fR);
.fi

.LP
.nf
\fBpool_t *\fR\fBpool_create\fR(\fBpool_conf_t *\fR\fIconf\fR, \fBconst char *\fR\fIname\fR);
.fi

.LP
.nf
\fBint\fR \fBpool_destroy\fR(\fBpool_conf_t *\fR\fIconf\fR, \fBpool_t *\fR\fIpool\fR);
.fi

.LP
.nf
\fBint\fR \fBpool_dissociate\fR(\fBpool_conf_t *\fR\fIconf\fR, \fBpool_t *\fR\fIpool\fR,
     \fBpool_resource_t *\fR\fIresource\fR);
.fi

.LP
.nf
\fBconst char *\fR\fBpool_info\fR(\fBpool_conf_t *\fR\fIconf\fR, \fBpool_t *\fR\fIpool\fR,
     \fBint\fR \fIflags\fR);
.fi

.LP
.nf
\fBpool_resource_t **\fR\fBpool_query_pool_resources\fR(\fBpool_conf_t *\fR\fIconf\fR,
     \fBpool_t *\fR\fIpool\fR, \fBuint_t *\fR\fInelem\fR, \fBpool_value_t **\fR\fIproperties\fR);
.fi

.SH DESCRIPTION
These functions provide mechanisms for constructing and modifying pools entries
within a target pools configuration.  The \fIconf\fR argument for each function
refers to the target configuration to which the operation applies.
.sp
.LP
The \fBpool_associate()\fR function associates the specified resource with
\fIpool\fR. A resource can be associated with multiple pools at the same time.
Any resource of this type that was formerly associated with this pool is no
longer associated with the pool. The new association replaces the earlier one.
.sp
.LP
The \fBpool_create()\fR function creates a new pool with the supplied name with
its default properties initialized, and associated with the default resource of
each type.
.sp
.LP
The \fBpool_destroy function()\fR destroys the given pool association.
Associated resources are not modified.
.sp
.LP
The \fBpool_dissociate()\fR function removes the association between the given
resource and pool. On successful completion, the pool is associated with the
default resource of the same type.
.sp
.LP
The \fBpool_info()\fR function returns a string describing the given pool. The
string is allocated with \fBmalloc\fR(3C). The caller is responsible for freeing
the returned string. If the \fIflags\fR option is non-zero, the string returned
also describes the associated resources of the pool.
.sp
.LP
The \fBpool_query_pool_resources()\fR function returns a null-terminated array
of resources currently associated with the pool that match the given list of
properties. The return value must be freed by the caller. The \fInelem\fR
argument is set to be the length of the array returned.
.SH RETURN VALUES
Upon successful completion, \fBpool_create()\fR returns a new initialized pool.
Otherwise it returns \fINULL\fR and \fBpool_error\fR(3POOL) returns the
pool-specific error value.
.sp
.LP
Upon successful completion, \fBpool_associate()\fR, \fBpool_destroy()\fR, and
\fBpool_dissociate()\fR return 0. Otherwise, they return -1 and
\fBpool_error()\fR returns the pool-specific error value.
.sp
.LP
Upon successful completion, \fBpool_info()\fR returns a string describing the
given pool. Otherwise it returns \fINULL\fR and \fBpool_error()\fR returns the
pool-specific error value.
.sp
.LP
Upon successful completion, \fBpool_query_pool_resources()\fR returns a
null-terminated array of resources. Otherwise it returns \fINULL\fR and
\fBpool_error()\fR returns the pool-specific error value.
.SH ERRORS
The \fBpool_create()\fR function will fail if:
.sp
.ne 2
.na
\fB\fBPOE_BADPARAM\fR\fR
.ad
.RS 20n
The supplied configuration's status is not \fBPOF_VALID\fR or \fIname\fR is
already in use.
.RE

.sp
.ne 2
.na
\fB\fBPOE_SYSTEM\fR\fR
.ad
.RS 20n
A system error has occurred. Check the system error code for more details.
.RE

.sp
.ne 2
.na
\fB\fBPOE_INVALID_CONF\fR\fR
.ad
.RS 20n
The pool element could not be created because the configuration would be
invalid.
.RE

.sp
.ne 2
.na
\fB\fBPOE_PUTPROP\fR\fR
.ad
.RS 20n
One of the supplied properties could not be set.
.RE

.sp
.LP
The \fBpool_destroy()\fR function will fail if:
.sp
.ne 2
.na
\fB\fBPOE_BADPARAM\fR\fR
.ad
.RS 16n
The supplied configuration's status is not \fBPOF_VALID\fR.
.RE

.sp
.LP
The \fBpool_associate()\fR function will fail if:
.sp
.ne 2
.na
\fB\fBPOE_BADPARAM\fR\fR
.ad
.RS 16n
The supplied configuration's status is not \fBPOF_VALID\fR or the parameters
are supplied from a different configuration.
.RE

.sp
.ne 2
.na
\fB\fBPOE_SYSTEM\fR\fR
.ad
.RS 16n
A system error has occurred. Check the system error code for more details.
.RE

.sp
.LP
The \fBpool_disassociate()\fR function will fail if:
.sp
.ne 2
.na
\fB\fBPOE_BADPARAM\fR\fR
.ad
.RS 20n
The supplied configuration's status is not \fBPOF_VALID\fR or the parameters
are supplied from a different configuration.
.RE

.sp
.ne 2
.na
\fB\fBPOE_INVALID_CONF\fR\fR
.ad
.RS 20n
No resources could be located for the supplied configuration or the supplied
configuration is not valid (for example, more than one default for a resource
type was found.)
.RE

.sp
.ne 2
.na
\fB\fBPOE_SYSTEM\fR\fR
.ad
.RS 20n
A system error has occurred. Check the system error code for more details.
.RE

.sp
.LP
The \fBpool_info()\fR function will fail if:
.sp
.ne 2
.na
\fB\fBPOE_BADPARAM\fR\fR
.ad
.RS 20n
The supplied configuration's status is not \fBPOF_VALID\fR or the \fIflags\fR
parameter is neither 0 or 1.
.RE

.sp
.ne 2
.na
\fB\fBPOE_INVALID_CONF\fR\fR
.ad
.RS 20n
The configuration is invalid.
.RE

.sp
.ne 2
.na
\fB\fBPOE_SYSTEM\fR\fR
.ad
.RS 20n
A system error has occurred. Check the system error code for more details.
.RE

.sp
.LP
The \fBpool_query_pool_resources()\fR function will fail if:
.sp
.ne 2
.na
\fB\fBPOE_BADPARAM\fR\fR
.ad
.RS 20n
The supplied configuration's status is not \fBPOF_VALID\fR.
.RE

.sp
.ne 2
.na
\fB\fBPOE_INVALID_CONF\fR\fR
.ad
.RS 20n
The configuration is invalid.
.RE

.sp
.ne 2
.na
\fB\fBPOE_SYSTEM\fR\fR
.ad
.RS 20n
A system error has occurred. Check the system error code for more details.
.RE

.SH USAGE
Pool names are unique across pools in a given configuration file. It is an
error to attempt to create a pool with a name that is currently used by another
pool within the same configuration.
.SH ATTRIBUTES
See \fBattributes\fR(7) for descriptions of the following attributes:
.sp

.sp
.TS
box;
c | c
l | l .
ATTRIBUTE TYPE	ATTRIBUTE VALUE
_
CSI	Enabled
_
Interface Stability	Unstable
_
MT-Level	Safe
.TE

.SH SEE ALSO
.BR libpool (3LIB),
.BR pool_error (3POOL),
.BR attributes (7)
